Examine source code of TikTokSaver

{
  "manifest_version": 2,
  "name": "TikTokSaver",
  "version": "1.0",
  "description": "Download TikTok videos with ease",
  "permissions": [
    "activeTab",
    "downloads",
    "storage",
    "tabs",
    "webNavigation",
    "webRequest",
    "scripting",
    "*://*.tiktok.com/*"
  ],
  "browser_action": {
    "default_icon": "icons/modern_icon48.png",
    "default_popup": "popup/popup.html",
    "default_title": "TikTokSaver"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.tiktok.com/*",
        "*://tiktok.com/*",
        "*://vm.tiktok.com/*",
        "*://vt.tiktok.com/*"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background/background.js",
      "background/inject.js"
    ],
    "persistent": true
  },
  "icons": {
    "48": "icons/modern_icon48.png",
    "96": "icons/modern_icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e6d329da-5562-44ed-949d-ed8db71850fa}"
    }
  }
}